KY-038 Sound Sensor - (AD838)

Description:

The KY-038 is an audio power amplifier featuring low power consumption, adjustable voltage gain, a maximum 5V power supply, reduced peripheral component requirements, and minimal total harmonic distortion. The KY-038 can be applied to consumer products with low voltage requirements, minimizing the number of peripheral components in use.

Characteristics:

- Main chip: LM393

- Working voltage: 4-6VDC

- Exit signal indicator:

- Power indicator light

- Comparator output light

- Single channel output signal

- Sensitivity adjusted by potentiometer

- The effective output signal is at a low level (Active LOW)

- When sound is detected, the output is active LOW and the corresponding LED lights up.

- It could be used as an acoustic light control; to deploy a sound and light alarm working with a photosensitive sensor.

- The maximum induction distance is 0.5 meters.

Reference link